Perforating disk



June 11, 19 G. A. COLMAN FERFORATING DISK File d Dec. 15. 1927 INVENTORGeo/ye Colman vlllllllflz lllauw l ll "=5 La/21v ATTORNEY Patented June11, 1929. 1,716,765

UNITED PATENT QFFICE.

GEQRGE A. GOLMAN, OF SEATTLE, WASHINGTON.

PEBFORATING DISK.

Application filed December 15, 1927. Serial No. 240,140.

My invention relates to an improved perfo- Idly mounted on axle 18 is apin depressing rater disk of a perforating machine. roller preferably somounted by means of More particularly, my invention relates to roller orball bearings 16. Said depressing a timber perforating disk used inconjunction roller 15 is of less diameter than the inner pe a with atimber perforating mechanism such as riphery of flange f, and is of suchdiameter as is disclosed in my co-pending application, Se to cause theouter periphery of said roller 15 rial No. 608,242. I to extend nearlyto the inner periphery of In perforating poles for use in telegraphflange i in order that it may forcibly engage poles or piling forpurposes of more thorthe ret acted pins 8.

10 oughly impregnating said poles with a pre- The mode of operation of adevice embodyserving compound, great difficulty is cxperiing myinvention in addition to that described enced in providing clean-cutperforations. above is as follows:

That is,difliculty is experienced with the pres As the pole 18 is causedto revolve against ent type of perforating disk where the perfodiskhousin 3 the said housing is rotated and 15 ti pins ar ri idly h ld inth disk b the perforating pins 8 are one by one brought cause of thetendency to tear or splinter the beneath the roller 15 whichsuccessively grad-. pole. u ally force outwardly or depress said pins toa A primary purpose of my invention is to predetern'iined extentrequired to make the overcome these objections, and to provide aperforation of the desired depth. Manifest- 20 perforator which issimple in construction, ly, the pins are gradually caused to pierce theand does not break or dull the perforating pole said pins rotate towardsthe diametripin points to the objectionable degree which 1 lignment17-17 and are gradually peris at present experienced with the usual formlnittcd t0 l'fitmct as y move beyond Said of perforating disk.alignment. This avoids tearing the edge of 25 The above mentionedgeneral objects of my the perforations which often occurs when theinvention, together with others inherent in pins are rigidly held in theperforating disk, the same, are attained by the mechanism illus since noprovision is made for adjusting the trated in the following drawings,the same belength 013 the protruding P in re p o e in a f rr d exemplaryform of embodt diametrical alignment of the pin and disk so ment of myinvention, throughout which W respect to t e poledrawings like referencenumerals indicate like This mode of operation avoids breaking the parts:pins or dullin the same and provides a most Figure 1 is a view in sideelevation of a disk eliicient perforating disk in practicaloperaembodying my invention with parts broken tion.

35 away, showing the pins in operative cngag'e- By providing the outerguide opening 7 in a ment with a pole; and bushmg 8 a simplemeans isprovided for as Fig. 2 is a view on dotted line 2, 2 of Fig. 1.seinbling the pin 8 and the spring 11 within A perforating disk housing3 is preferably the recess 5 and also a ready means is proprovided witha flange 4 in which are pin revided for replacing said pins when it isde- 40 ceiving recesses 5 which recesses have an. inner sired to sharpenthe points of said pins.

pin guide opening 6 and an outer pin guide Obviously, changes may bemade in the opening 7 the latter being preferably proform, dimensionsand arrangement of the vided in abushing S. In said openings a pcrpartsof my invention, without departing forating pin 8 is located which mayhave a from the principle thereof, the above setting collar 9operatively disposed to strike against forth only a preferred form ofembodiment. shoulder 10. A resilient means which may be 1 claim in theform of a spring 11 bears against collar A pile perforating diskembodying a hous- 9 and bushing 8, tending to hold collar 9 ing idlymounted 11c ving aperipherally dis 0 against shoulder 10 therebyretracting the pin posed flange with perforating pin mounting 50 8within recess 5. recesses therein, said recesses having an inner Diskhousing 3 is rotatively mounted on and outer pin guiding opening theoutermost shaft 12. Axle 13 is mounted on bracket 14. of which openingsis formed in a bushing;

perforating pins slidably mounted therein, said pins having a collarformed thereon which. limits the inner displacement of said pin;resilient means hearing against the collar of said pin ane said bushing"said means nermally holding said pins retracted in said recesses; anaxle; a mounting bracket for said axle; and a pin depressing roller idly1n0nnt ed on said axle whereby said roller may depress said pinssuccessively when said housing is caused to rotate by means of arotating pile. In Witness whereo'i I hereunto subscribe my name this 7thday of Decei'nber, 1927.

GEORGE A. COLMAN.

